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Bedrock and surficial geology of the Hoonah area, on IfSAR-generated bare earth.

Bedrock and surficial geology of the Hoonah area, on IfSAR-generated bare earth.

East Chichagof Province is Southeast’s northernmost island province, including most of Chichagof as well as Lemesurier and Pleasant Islands. Geologically, almost all of the province lies within the Alexander Terrane, which, farther to the southeast, contains the famous caves and (vanished) giant trees of northern Tàan, sea lion (Prince of Wales Island). As on Tàan, carbonate rocks are common in East Chichagof Province, with high-quality karst scattered primarily throughout the eastern portion. The western province is predominantly granitic with thinner soils and less productive forest, so logging has concentrated around Hoonah.

Tree size and logging in East Chichagof Province. Logging (pink) has concentrated on the eastern portion where limey parent material supported more large-tree forest (dark green).

Tree size and logging in East Chichagof Province. Logging (pink) has concentrated on the eastern portion where limey parent material supported more large-tree forest (dark green).

 

 

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